One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,11)(4,9)(5,13)(6,7)(8,12)(10,16)(14,15)(17,18)(19,26)(20,28)(21,23)(22,25)(24,29)(27,31)(30,32)(33,34,39,43)(35,40,37,42)(36,46,38,41)(44,48,45,47)(2,7)(4,15)(8,11)(10,13)(17,19,22,21)(18,23,25,26)(20,27,29,30)(24,31,28,32)(33,35,39,37)(34,40,43,42)(36,45,38,44)(41,48,46,47)(2,7)(3,12)(9,14)(10,13)(33,36,39,38)(34,41,43,46)(35,44,37,45)(40,47,42,48)(1,3,6,12)(2,8,7,11)(4,10,15,13)(5,14,16,9)(17,20)(18,24)(19,27)(21,30)(22,29)(23,31)(25,28)(26,32)(33,37,39,35)(34,42,43,40)(36,44,38,45)(41,47,46,48)(1,4)(2,9)(3,13)(5,11)(6,15)(7,14)(8,16)(10,12)(17,21,22,19)(18,23,25,26)(20,27,29,30)(24,32,28,31)(33,38,39,36)(34,41,43,46)(35,45,37,44)(40,47,42,48)(1,5,6,16)(2,10,7,13)(3,14,12,9)(4,8,15,11)(17,18)(19,23)(20,24)(21,26)(22,25)(27,31)(28,29)(30,32)(33,34)(35,40)(36,41)(37,42)(38,46)(39,43)(44,47)(45,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.